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Implement an API to let foreign-data wrappers actually be functional.

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This commit provides the core code and documentation needed.  A contrib
module test case will follow shortly.

Shigeru Hanada, Jan Urbanski, Heikki Linnakangas
This commit is contained in:
Tom Lane
2011-02-20 00:17:18 -05:00
parent d5813488a4
commit bb74240794
39 changed files with 1202 additions and 62 deletions
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3
src/backend/optimizer/plan/planner.c
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@ -1914,7 +1914,8 @@ preprocess_rowmarks(PlannerInfo *root)
newrc->rti = newrc->prti = i;
newrc->rowmarkId = ++(root->glob->lastRowMarkId);
/* real tables support REFERENCE, anything else needs COPY */
if (rte->rtekind == RTE_RELATION)
if (rte->rtekind == RTE_RELATION &&
get_rel_relkind(rte->relid) != RELKIND_FOREIGN_TABLE)
newrc->markType = ROW_MARK_REFERENCE;
else
newrc->markType = ROW_MARK_COPY;